Gonzalez-Gonzalez, Carlos A.; Fuentes-Benitez, Aydee; Cuevas-Yanez, Erick; Corona-Becerril, David; Gonzalez-Romero, Carlos; Gonzalez-Calderon, Davir Tetrahedron Letters, 2013 , vol. 54, # 21 p. 2726 - 2728